Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001AOTZ
Model Year Start: 2019 Model: Avalon HV Prod Date Range: [04/2018 - 08/2021]
Title: EXTERIOR PANELS / TRIM: GRILLE SHUTTER SYSTEM: U129387; Lost Communication between Hybrid Powertrain Control Module and Active Grille Air Shutter Missing Message; 2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]

DTC

U129387

Lost Communication between Hybrid Powertrain Control Module and Active Grille Air Shutter Missing Message

DESCRIPTION

This DTC is stored if a communication malfunction occurs between the hybrid vehicle control ECU assembly and swing grille actuator assembly.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

U129387

Lost Communication between Hybrid Powertrain Control Module and Active Grille Air Shutter Missing Message

CAN communication malfunction between the hybrid vehicle control ECU assembly and swing grille actuator assembly. (1 trip detection logic*)
  • CAN communication system
  • Swing grille actuator assembly
  • Radiator shutter sub-assembly
  • *: This malfunction is only detected when the power switch is on (IG).

PROCEDURE

1.

CHECK FOR DTC

(a) Check for DTCs.

Powertrain > Engine > Trouble Codes

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